CVE-2021-20190: apache nifi Deserialization of Untrusted Data
CVSS: 8.3v2.0HighAnalyzed
AliasesUBUNTU-CVE-2021-20190DEBIAN-CVE-2021-20190CGA-25x8-8gr2-6xp7CGA-28pq-xmrg-f856CGA-2gx8-ffwr-75f5CGA-2jgp-92g6-9hxjCGA-2ph6-8g2g-vv5rCGA-2r4x-vfph-7fmjCGA-2v56-q4wx-w5r6CGA-2vc3-qf4f-wfr8CGA-2vm9-56r6-96pvCGA-2wj2-c7w8-3pwpCGA-3q8v-wg3j-xjpqCGA-3qq6-q2cj-x2qcCGA-3wr2-f672-55wvCGA-3wv4-vr92-7fxjCGA-3xx5-7x7c-g5m4CGA-425w-5g8r-8m82CGA-45r8-2f5q-528cCGA-49mq-pxx2-47hpCGA-4cr6-w74v-w265CGA-4g8h-4cxp-x2v9CGA-4m7w-2qwm-f26hCGA-4qpj-rx4r-mfp3CGA-574q-qj55-gj36CGA-597h-6w38-8pwrCGA-5cfj-63fc-4qm5CGA-5gf7-h8qq-4xjmCGA-5rm6-f9j7-gwpjCGA-5v44-7377-8jpcCGA-5xv9-x3gf-jr48CGA-628w-wjrr-57r3CGA-62m4-cr79-wxhfCGA-64fr-vgqp-6wf9CGA-6crr-7pw6-f6qgCGA-6fvc-c4mm-55whCGA-6hpp-r255-mvf7CGA-6hqr-3985-q9hjCGA-6jw3-fwc4-67mcCGA-6m46-qv73-j55fCGA-6q88-55m7-5g22CGA-6qcx-666c-hc75CGA-6xrg-hhq8-5434CGA-76mj-hm27-9qm7CGA-7c3p-757f-mq45CGA-7cx5-4cc6-3c65CGA-7f2f-wr29-6j82CGA-7gvw-3qv3-9g4fCGA-7p98-j223-3vjcCGA-7wqp-j6j6-3gg6CGA-7xjq-37qj-6jp6CGA-835j-wrfg-w5rjCGA-8c2h-3gcw-26vvCGA-8j27-rq3v-773rCGA-8p8w-wqh2-vvhqCGA-8rmx-7327-xp3fCGA-8w2c-8pgj-8h2cCGA-92qf-jffg-f3c6CGA-95vh-8px7-hmwjCGA-c592-84f6-4c9wCGA-c5jm-x564-2c3jCGA-c74q-gcpp-6v3gCGA-c77p-2c35-qj62CGA-cfqf-9cpp-cv9hCGA-cprc-hjrr-p4vpCGA-cr52-qmhw-3cg9CGA-f49w-345c-v3v3CGA-f73j-87c6-5ggjCGA-f8h8-xcgm-38gpCGA-f9g8-g7rc-fwqwCGA-fc5m-r9g6-gj4pCGA-fhfh-x43f-8645CGA-fjmv-vmhc-xmxxCGA-fpxr-7hh5-jjjhCGA-fqc9-jp83-f5xwCGA-fqf8-px2g-fxjqCGA-fvcr-r56q-p62wCGA-g495-p6p2-8x6mCGA-g65q-f4q8-jr98CGA-gc4g-cmv7-7pp8CGA-gp38-m2gx-3fm3CGA-gqpx-gw86-rjcxCGA-grmg-hgvg-qqhxCGA-gvg8-593g-7p89CGA-gw2j-vrg3-67rgCGA-h73q-jmg3-r8wrCGA-hc8m-6fc9-m38vCGA-hfm3-3456-6422CGA-hg78-vf7f-jc29CGA-hjfp-7r4h-qprmCGA-hjjw-vmw9-jwvfCGA-hxp5-p4h2-9vmgCGA-j68g-hg9f-46q2CGA-j85f-9qgx-773rCGA-jgcr-2pg4-r6mvCGA-jjqg-8c25-83hrCGA-jppj-gph5-3jq2CGA-jvgg-q337-87v6CGA-jx4w-687v-59gcCGA-m6x8-xmcq-2qv2CGA-mgxm-j5qj-2389CGA-mj74-m29w-gvw8CGA-mmq9-h979-j9rpCGA-mq67-c554-c28xCGA-mrjx-qr7c-p5q8CGA-p86c-j4wc-8p92CGA-p943-fcgm-2fh2CGA-pgf8-8xf3-j566CGA-pmpj-66rr-xghpCGA-pqvp-wcg7-3pjgCGA-pr6q-qvr3-w83jCGA-pw4m-w44q-5j6fGHSA-5949-rw7g-wx7wBIT-nifi-2021-20190CGA-q33r-48hq-5p49CGA-q785-x85w-3mw7CGA-qcpj-pjhw-82vgCGA-qg5g-6rg5-cjrpCGA-qh45-3g6q-6vwvCGA-qm96-4rh4-q5w7CGA-qvpj-44xm-3vj9CGA-r2j3-6p2j-vmffCGA-rf8f-mvx2-7p29CGA-rhq6-g2gf-xrfvCGA-rm2c-q743-h4vmCGA-rv27-7xxx-vj3rCGA-v25r-mfxr-qg2jCGA-v328-p2qc-xr4wCGA-v6cv-36wx-pc8gCGA-v9gr-p35m-gx7jCGA-vfjc-qv3g-jf3hCGA-vg7v-rmjv-qj54CGA-vgpf-rx76-mch2CGA-vgxx-xgcc-x5wwCGA-vj25-36gv-hmv8CGA-vm96-75qp-qvq6CGA-vqgq-xv4q-wxp3CGA-vwwc-8j63-j25mCGA-vx2j-3r9x-33qvCGA-w339-mrwg-pq7hCGA-w7x9-2rq2-w3qqCGA-w89x-vhjg-gq4rCGA-wjvf-chxh-fv6fCGA-wmjc-v925-pp8cCGA-wqwm-9qmr-w466CGA-wrx7-gm5c-vqphCGA-x2p8-g6gp-6fmwCGA-x2xh-462v-qvmgCGA-x42p-64m2-x7rvCGA-x5hh-vrhr-jp3qCGA-x94h-67hw-88j6CGA-xfxh-v39p-r4fgCGA-xr5c-6jxh-xp2wCGA-xwh3-hw9g-j798
Published 19-01-2021Last modified 27-08-2025
Vulnerability summary
CVE-2021-20190 is a high (CVSS 8.3) Deserialization of Untrusted Data vulnerability in apache nifi. EPSS estimates a 7.57% chance of exploitation in the next 30 days, higher than 94.4% of scored vulnerabilities.
CVSS score
8.3/10
010
High · v2.0 (NVD)EPSS score
7.57%
0%100%
Low · +0.09 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 3 · Related 1Timeline
- 19-01-2021PublishedVulnerability first disclosed.
- 27-08-2025Last modifiedVulnerability information updated.
Description
A flaw was found in jackson-databind before 2.9.10.7. FasterXML mishandles the interaction between serialization gadgets and typing. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
CVSS metrics
7 scores · 6 sources · 2 versionsHigh 8.1Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesAll 6 agree
- OSV · UbuntuEcosystem advisory · calculated8.1HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.1HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · ChainguardEcosystem advisory · calculated8.1HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · MavenEcosystem advisory · calculated8.1HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVDNIST8.1HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
High 8.3Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:P/I:P/A:CSourcesSingle source
EPSS trend
Probability
7.57%
Chance of exploitation in the next 30 days
Percentile
94%
Versus all other CVEs
30-day change
+0.09 pp
From 7.48% on 18-09-2026
18-09-202618-10-2026
EPSS score7.57%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Chainguard68 products
- eco-java-gradle-2.10All versions (No fix recorded)
- eco-java-gradle-2.11All versions (No fix recorded)
- eco-java-gradle-2.12All versions (No fix recorded)
- eco-java-gradle-2.13All versions (No fix recorded)
- eco-java-gradle-2.14All versions (No fix recorded)
Netapp4 products
Debian2 products
- jackson-databind< 2.12.1-1
- debian_linuxEOL9.0
Oracle2 products
Apache1 product
- nifi≥ 1.7.0, ≤ 1.12.1
Com.fasterxml.jackson.core1 product
- jackson-databind≥ 2.7.0, < 2.9.10.7 | < 2.6.7.5
Fasterxml1 product
- jackson-databind< 2.6.7.5 | ≥ 2.7.0, < 2.9.10.7
Ubuntu1 product
- jackson-databindAll versions (No fix recorded)
8 vendors · 80 products
References
15 links- github.com/FasterXML/jackson-databind/issues/2854X Refsource MISCREPORTFIXWEBPatchThird Party Advisory
- bugzilla.redhat.com/show_bug.cgi?id=1916633X Refsource MISCREPORTFIXWEBIssue TrackingPatchThird Party Advisory
lists.debian.org/debian-lts-announce/2021/04/msg00025.htmlMailing ListX Refsource MLISTAdvisoryWEBThird Party Advisory
